Bub & Bob X is a clone of the very popular arcade game Bubble Bobble. (Free upgrade if you own Bub & Bob 2)

Bub & Bob X is a clone of the very popular arcade game Bubble Bobble. You control a cute bubble blowing dragon. In each level, you must use bubbles to defeat all the enemies and earn points, bonus items or special abilities. You can play alone or team up with a friend.